
package com.seekting.piano;

import java.io.IOException;

import android.app.Activity;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.media.MediaRecorder.OnInfoListener;
import android.os.Bundle;
import android.os.Environment;
import android.os.SystemClock;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class RecordActivity extends Activity {

    private static final String LOG_TAG = "AudioRecordTest";
    // 语音文件保存路径
    private String FileName = null;

    // 界面控件
    private Button startRecord;
    private Button startPlay;
    private Button stopRecord;
    private Button stopPlay;

    // 语音操作对象
    private MediaPlayer mPlayer = null;
    private MediaRecorder mRecorder = null;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 开始录音
        startRecord = (Button) findViewById(R.id.startRecord);
        startRecord.setText(R.string.startRecord);
        // 绑定监听器
        startRecord.setOnClickListener(new startRecordListener());

        // 结束录音
        stopRecord = (Button) findViewById(R.id.stopRecord);
        stopRecord.setText(R.string.stopRecord);
        stopRecord.setOnClickListener(new stopRecordListener());

        // 开始播放
        startPlay = (Button) findViewById(R.id.startPlay);
        startPlay.setText(R.string.startPlay);
        // 绑定监听器
        startPlay.setOnClickListener(new startPlayListener());

        // 结束播放
        stopPlay = (Button) findViewById(R.id.stopPlay);
        stopPlay.setText(R.string.stopPlay);
        stopPlay.setOnClickListener(new stopPlayListener());

        // 设置sdcard的路径
        FileName = Environment.getExternalStorageDirectory().getAbsolutePath();
        FileName += "/audiorecordtest.3gp";
    }

    // 开始录音
    class startRecordListener implements OnClickListener {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            mRecorder = new MediaRecorder();
            mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
            mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
            mRecorder.setOutputFile(FileName);
            mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
            mRecorder.setOnInfoListener(new OnInfoListener() {

                @Override
                public void onInfo(MediaRecorder mr, int what, int extra) {
                    System.out.println("what=" + what + "extra" + extra);
                }
            });
            try {
                mRecorder.prepare();
            } catch (IOException e) {
                Log.e(LOG_TAG, "prepare() failed");
            }

            mRecorder.start();

            new Thread(new Runnable() {

                @Override
                public void run() {

                    while (true) {
                        SystemClock.sleep(220);
                        System.out.println("xxxx" + mRecorder.getMaxAmplitude());
                    }
                }
            }).start();
        }
    }

    // 停止录音
    class stopRecordListener implements OnClickListener {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            mRecorder.stop();
            mRecorder.release();
            mRecorder = null;
        }

    }

    // 播放录音
    class startPlayListener implements OnClickListener {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            mPlayer = new MediaPlayer();
            try {
                mPlayer.setDataSource(FileName);
                mPlayer.prepare();
                mPlayer.start();
            } catch (IOException e) {
                Log.e(LOG_TAG, "播放失败");
            }
        }

    }

    // 停止播放录音
    class stopPlayListener implements OnClickListener {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            mPlayer.release();
            mPlayer = null;
        }

    }
}
